American Repertory Ballet rings in the spring season with an evening of world and company premieres, including a sneak peek at the balcony scene from Douglas Martin's new Romeo and Juliet, set to the lush music of Prokofiev.  The program will also feature a major revival of Gerald Arpino's Confetti.  A virtuoso ballet for three couples, Confetti is a "frolicsome, frothy romp in the spirit of the tarantella" set to the exuberant music of Rossini's "Semiramide" Ouverture.  Spring into Love will also showcase premiere works by female choreographers.  Trinette Singleton, famed former Joffrey Ballet dancer, will choreograph Capriccios to Shostakovich's Piano Concerto #2.  Resident Choreographer and ARB Ballet Master Mary Barton will choreograph a new piece for ARB's male dancers.